- Log in to your Apple Developer account at developer.apple.com.
- Navigate to "Certificates, Identifiers & Profiles".
- Create a new key: select "Keys" from the left column and click on "+".
- Provide a name for the key, select "Sign In with Apple," then continue and confirm.
- Record your Key ID. It will be displayed on the screen after the key is created.
- Download and save your private key (.p8 file). It will be available for download only once.
- Record your Team ID. You can find it in your developer account overview under "Membership".
- Enter the required parameters in the settings window in your account